If you set up a field and a job in the monitor it should tell you if the rate is not recommended for the meter. Usually meters are fine at low rates, but if the rate selected is higher than the meters capability it will warn you. You then need to select a faster sprocket ratio if you aren’t already at the highest drive ratio.
The canola meter is pretty rock solid in the low ratio. At those low of settings I would trim the meter cal factor based on in field progress rather than doing repeated automatic calibrations. Just remember making the cal factor larger makes the meter turn slower, thereby reducing the seeding rate.
Are you actually going to have inoculant passing through the saddle tank meter? We put all of our inoculant through meter #2 which is the second smallest, but at a significantly higher rate. We never had a problem when trying to stretch things from time to time for different reasons.
It’s possible you may get some hydraulic instability at an unknown low meter speed but that’s a different issue that can usually be trimmed away on the tools pages in the monitor.